Online PHP Compiler — Run PHP Code Online Free

PHP still powers a huge slice of the web, from WordPress to Laravel apps. To try it, though, most tutorials tell you to install XAMPP and spin up a local server. You don't have to — GoCode runs PHP online, free, in the browser.

Hello, World in PHP

<?php
echo "Hello, World!\n";

Pick PHP in the IDE, paste this, and Run.

Reading input

<?php
$n = (int) trim(fgets(STDIN));
echo $n * $n, "\n";

Type a number into the stdin box, Run, and PHP prints its square.

What you can practise

• Arrays and associative arrays — the heart of everyday PHP.
• String functions like strlen, explode and implode.
• Loops and simple functions.

No server to configure, no port to open — just write PHP and see the output.